4 weeks before release: start writing

It helps to clear out the old content from the previous branch, leaving the structure in place, to be filled in.

Uncomment all items from the list of supported languages.

Bother people who have not provided information for the wiki page (use IRC, send emails, knock on doors). Mention your deadline because people often think they have until the actual release date to reply.

3 weeks before release: review

Submit a draft for review to a small group of people (ask for volunteers in the Engagement and Documentation channels).